What glue or epoxy do you guys use to mount amps to the interior fiberglass wall to the left of the observer's seat? My plan is to glue a piece of Azek to the fiberglass wall and mount the amp to the piece of Azek, but I want to make sure it's going to stay up there.

In all seriousness I use that heavy duty 2" wide stick on velcro. I have 2 heavy amps mounted directly to the wall using that stuff. I cover the entire bottom of the amp surface. They haven't moved an inch no matter how much hard wake I take.

"Do you stick the Velcro to the carpet or to the fiberglass" OMG the Movie Idiocracy has come true.

Seriously. The guy that made his own NSS system was a breath of fresh air to this place! I'm sure he has come back here and has his palms over his face! Other then that it's all Truck Lifters & Plasti Dipppers! We had a name for these people in high school "Ratta Hack"

What I was getting at is whether velcro sticks to carpet well enough 2 hold everything if I have 2 cut the carpet away to stick a velcro strip to the fiberglass (with the glue side) I might as well do the full on glue method and be done with it

All joking and jabbing aside If you're going to take the time to mount an amp that costs $$$ go ahead and glue it to the hull using grant or Seans method. I used the locktite version of liquid nails pl construction adhesive I believe, and worked great. Prep on the hull as grant mentioned is key, and scoring or pitting the backside of the material to be mounted helps. The adhesive used on velcrow I'd be leery of using because as the temperature gets hotter it's more likely to fail than something meant to be more permanent. I'm sure the velcrow portion would hold together if you used a big enough contact area, but the thin layer of glue they use is the weak link.

Liquid nails change few years back. Started having squeaks in sub floor and hardwood floor transitions coming up. Switched to PL and not a problem since use some 80 or 120 grit paper to "key" the mating surfaces. As grant said Bondo fiberglass filler or gorilla hair filler works awesome also. Just remember no glue will work if you don't clean and key the mating surfaces.